Plunges steeply, demolishing vicar's shed (5,5)

I believe the answer is:

crash-dives

I'm a little stuck... Click here to teach me more about this clue!

'plunges' is the definition.
(crash-diving is a kind of plunging)

'steeply demolishing vicar's shed' is the wordplay.
'vicar's shed' anagrams to 'CRASH-DIVES'.
But, I'm unsure how the anagram is indicated.

Can you help me to learn more?

I've seen this clue in The Guardian.

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